removal of the changes.sql file, now useless thanks to the db upgrader
Merge pull request #12 from Ralt/master

Adds missing dependency
User requesting an access can add a message for admins
Access denying can be joined a message immediately or later seen. Small refactoring of server js files.
refactoring of the client js : sclicing of miaou.main.js in focused files
minor style changes
It's know possible to delete our own messages (silent delete for very recent messages, delete with traces in db for older ones)
confirmation dialog before deletion of messages
close profile on click on edit or delete button
refactored server side : most js files are moved into the libs directory
messages rendered in a dialog now have a max-height
If after 4 seconds the connection isn't working, we try again with xhr-pooling
favicon change to show new messages or ping
The main image describing a room, if any, is now clickable in the rooms page and sends to the room
small fixes
addition of the lang column in the room table
removal of all callbacks from socket.io calls in order to be compatible with the xhr-pulling transport
fixed a bug with code starting a comment
Merge branch 'trimcode' into no-callback
small fixes